troubleshooting Question

SQL transaction log growth during maintenance plan

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tickettFlag for United Kingdom of Great Britain and Northern Ireland asked on
Microsoft SQL ServerMicrosoft SQL Server 2005Microsoft SQL Server 2008
8 Comments1 Solution614 ViewsLast Modified:
I have a reasonably large database (25GB) with a backup plan:

Full database backup daily at 10pm
Transaction log backup every 30minutes between 8am - 9.30pm

Additionally there is a maintenance plan which runs at midnight.

When the maintenance plan runs the transaction log grows to about 6GB.
Why is this? Could it/should it be avoided?

When the transaction log backups start in the morning, I "think" the log is cleared down (when I checked at 9am it was 98% free space) but after several hours (a few more transaction log backups) it eventually shrinks back to 10MB (and will remain roughly this size throughout the day).
Why is this? Could it/should it be avoided?

Thanks

Lee
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